Patagonia's Merino 3 Midweight Balaclava has a wonderfully soft hand, with a warm fabric blend of chlorine-free merino wool (78%) and recycled polyester (19%) that feels smooth on your skin, manages moisture, and stays warm when wet. Our merino wool (from non-mulesed sheep) naturally breathes, stretches as you move, and has a great warmth-to-weight ratio. Slow-washed for softness and shrink-resistance. The face opening fits above the mouth or below the chin. Bluesign® approved.